Improvement in globe-valves



C. WALTER.

GLOBE VALVE.

Patented June 6.1876.

UNITED STATES ATENT FFIGE.

CARL WALTER, OF CINCINNATI, OHIO.

IMPROVEMENT IN GLOBE-VALVES Specification forming part of Letters PatentNo. 178,492, dated June 6, 1876; application filed March 21, 1876.

To all whom it may concern:

Be it known that I, CARL WALTER, a resident of the city of Cincinnati,in the State of Ohio, have invented certain new and useful Improvementsin Globe-Valves, of which the following is a specification:

My invention consists in constructing globe-valves in such a manner asto effectually prevent the escape of steam, gas, water,

or vapors or fluids around the stem that actuates the valve, the detailsof the improvement, and the advantages resulting from the use of thesame, being hereinafter more fully described.

In the accompanying drawing, forming part of this specification, Figure1 is a vertical section of my valve in its closed condition. Fig. 2 is asimilar section, but showing the valve raised from its seat; and Fig. 3represents by elevations and sections the various parts of my valveseparated from each other.

The shell A, valve-seat B, and neck 0 may be as represented, or of anyother approved inform, as they constitute no part of my inven- The neck0 is screw-threaded externally at 0, while its interior is cylindrical,and is furnished with one or more vertical grooves or channels, D, whichlatter are traversed by the radial wing or Wings 0 of valve E. By thisarrangement said grooves confine the valve to a proper vertical path,and at the same time prevent any rotation of said valve. Theoperatingstem of this valve consists .preferably of a left'handed screw,F, of any suitable pitch, which screw engages with the tubular nut G,whose lower end carries a collar, H, while its upper end isscrew-threaded at I. The aforesaid tubular nut fits snugly Within thecylindrical box or housing K, that is screw-threaded at k to engage withthe exterior thread of the neck 0. The collar H carries a washer, L,that bears against a gasket, M, the latter being clamped between neck Gand housing K, when the various parts of the valve are in position. Theupper end of housing K is chambered out or counterbored at N to receivethe diminished portion 0 of hub O, which hub is cast with, or otherwiseattached to, the customary handwheel P. This hub is screw-threadedintefemale thread of tubular nut Gr.

When the various parts of the device are fitted together and are intheir normal positions the valve proper E is seated in its hearing B,and the guides or wings e occupy the lower portion of grooves D, as seenin Fig. 1.

To open the valve the wheel P is turned to the right, which act impartsa corresponding movement of nut G, through the instrumentality ofretaining devices S, and the result is that the screw F is gradually runup within nut G U, the wings e and grooves D co-acting to prevent anyrotation of valve E and its attached stem F.

The closure of the valve is effected by a reverse movement of thehand-wheel P, which causes the stem F to descend within nut G U, therebyforcing said valve down upon its bearing B.

It will be noticed that the wings e and grooves D prevent any rotationof the valve E, both when it is elevated and depressed,

and as said valve is thus guided in a vertical path, and preventedgrinding in its bearing B, the latter will last much longer and not beso liable to leak water, steam, or gas.

It will also be noticed that there is no opening through the hub O;neither is there any complicated stuffing-box for steam to leak throughand scald the hands of the operator, as the two packed joints M and Tefi'ectually prevent the upward passage of steam within the housing K 0of the device.

In some cases it may be found advisable to omit the hand-wheel P, andprovide the hub O with a square head for the reception of asocket-wrench or other suitable device for rotatin g said hub.

Other appliances may be substituted for the wings e, to prevent rotationof valve E.

What I claim as new, and desire to secure by Letters Patent, is-

l. In combination with the shell A B O and non-rotatable valve E F, thehousing J 1% K,-huh O, set screw S, collar H, and packing or washers M1, all substantially as shown and described.

CARL WALTER.

Attest:

-' CLINTON KIRBY,

CHARLES SGHAMMEL.

